33640552243 has 4 divisors (see below), whose sum is σ = 34192036768. Its totient is φ = 33089067720.

The previous prime is 33640552241. The next prime is 33640552301. The reversal of 33640552243 is 34225504633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34225504633 = 6491 ⋅5272763.

It is a cyclic number.

It is not a de Polignac number, because 33640552243 - 2¹ = 33640552241 is a prime.

It is a super-2 number, since 2×33640552243² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33640552241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275742171 + ... + 275742292.

It is an arithmetic number, because the mean of its divisors is an integer number (8548009192).

Almost surely, 2^33640552243 is an apocalyptic number.

33640552243 is a deficient number, since it is larger than the sum of its proper divisors (551484525).

33640552243 is an equidigital number, since it uses as much as digits as its factorization.

33640552243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551484524.

The product of its (nonzero) digits is 259200, while the sum is 37.

The spelling of 33640552243 in words is "thirty-three billion, six hundred forty million, five hundred fifty-two thousand, two hundred forty-three".